In order to study the influence of the change of spatial guide vane outlet width on the hydraulic performance of submersible pump,the 200QJ-32-56 submersible pump was taken as the research object,and other parameters of the guide vane were kept unchanged.By changing the outer diameter of the spatial guide vane outlet,five hydraulic schemes were designed in the axial plane projection diagram.Based on Reynolds time mean equation N-S equation and RNG k-ε turbulence model,the unsteady flow field of 5 kinds of guide vane schemes is calculated.The calculation results show that the optimal design scheme is when the outlet width of guide vane d4=14 mm,at a design flow rate of 32 m3/h,the model pump has a head of 56.56 m and an efficiency of 68.14%,and the overall performance of the model pump will decrease if the outlet width is increased or decreased.Proper design of the outlet width of the guide vane can effectively improve the uniformity of pressure distribution in the guide vane,reduce the turbulent kinetic energy and reduce hydraulic loss,and improve the flow condition of the next impeller,thus improving the hydraulic performance of the whole pump.
关键词
潜水泵/空间导叶/出口宽度/水力损失/级间匹配
Key words
submersible pumps/space guide vanes/outlet width/hydraulic losses/matching between stages
维普
万方数据